پديدآورندگان :
Amirbeygi Hesam MSc Student, Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran , Tohidlou Esmaeil etohidlou@eng.usb.ac.ir Assistant Professor, Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran , Khosravi Hamed Assistant Professor, Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
كليدواژه :
Nanocomposites , Graphene , Surface Modification , Mechanical Testing.
چكيده فارسي :
This paper reports on the effect of silane modified graphene (SGr) loading (0.05, 0.1, 0.3 and 0.5 wt.%) on the mechanical properties of epoxy composites. For this purpose, surface of Gr nanoplatelets was modified with 3-aminopropyltrimethoxysilane (3-APTMS) as a coupling agent. For dispersing of the SGr into the polymer matrix, high-intensity ultrasonication and mechanical stirring techniques were employed. The mechanical behavior of the specimens was characterized by tensile and compressive tests. Based on the experimental results, the maximum value of improvement in the mechanical moduli and compressive strength was related to the specimens with 0.5 wt.% and 0.3 wt.% SGr, respectively. However, the addition of SGr enhanced the tensile strength at only 0.05 wt.% SGr loading. The possible mechanisms behind these behaviors were proposed and discussed.
